Zorger Road Thru Truss Bridge

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FROM THE 1996-2001 PENNSYLVANIA HISTORIC BRIDGE SURVEY:
"The bridge carries a 1 lane road over a stream in a rural area of active farms. TR 420 is a former railroad right of way converted to a vehicular roadway. The short line was a branch of the New York Central Railroad. It served primarily as a logging railroad, connecting to towns in southern Clearfield County, such as New Millport and Kerrmoor."

"The ca. 1880, single span, 180'-long, pin-connected double intersection Pratt (Whipple) thru truss bridge is supported on ashlar abutments. Designed to railroad specifications, the bridge consists of 10, 18'-long panels. It has eye bar diagonals that extend across two panels, lower chords eye bars, and built up upper chords and verticals. It is one of nine Whipple truss bridges identified by the survey, and one of two in Clearfield County (17 7222 0565 0005 is the other). The Whipple design was patented by American engineer Squire Whipple in 1847, and it was widely adopted by the railroad industry between 1865 and 1885. The bridge is historically and technologically significant as a complete and rare surviving example of the design."